diff --git a/content/xml/document/src/Makefile.in b/content/xml/document/src/Makefile.in
index bb02ee1d6684..c3aea3a99369 100644
--- a/content/xml/document/src/Makefile.in
+++ b/content/xml/document/src/Makefile.in
@@ -28,7 +28,7 @@ include $(DEPTH)/config/autoconf.mk
 
 MODULE		= layout
 LIBRARY_NAME	= gkconxmldoc_s
-REQUIRES	= xpcom js dom locale widget caps htmlparser necko view docshell webshell uriloader pref xpconnect uconv chardet expat lwbrk
+REQUIRES	= xpcom string js dom locale widget caps htmlparser necko view docshell webshell uriloader pref xpconnect uconv chardet expat lwbrk exthandler mime
 
 CPPSRCS		= \
 		nsXMLContentSink.cpp \